The room in question is discussed at length in this post (see the last 2 images from the OP): https://voat.co/v/pizzagate/1453433

Now, compare that room, specifically the ceiling (with the red i-beams and wood cross-slats) and the whitewashed brick walls, with this image, from mickey panayiotakis on flickr: https://www.flickr.com/photos/mp459/421540076/in/photolist-4L64Qv-8FmN5J-6kruSe-AmrfgW-6uM8cy-jy117H-9GBit4-do4q2j-em3EKo-9y9j4n-6PH8Xv-6uGVqx-9GBfHk-9GBeCB-6PMgPb-zpL7VV-6cqZJJ-axU8Y4-emyDGZ-9GEqbW-6cmQ1z-6PH8W2-6cmQpZ-jWTBBp-da298j-ctUPzW-73jzZB-ewgpLA-68EGf2-em3EA3-em3EhN-ekWTVX-em3EUQ-6uM8fU-nfVvMB-5cHiPW-Dfvbm-9GDZiU-9GBd5H-68EFWe-d8N1BW-6cmRo4-5i4eWv-ccwSuw-6cr18L-gNJV3r-oHxmtA-6PMgMj-6cr1fG-ekdaQf/

The guy is a member of a band that played a gig at CPP. There are other images in that post with different perspectives. It's the same room. It's at Comet Ping Pong.

There's a guy on YouTube saying this brick room is the "kill room" and located at the Pajama Factory (PizzaGateGear, https://www.youtube.com/watch?v=mgE1fT6472U)). It's not the kill room, and it's not at the PJF. I'm not saying that the kill room isn't at the PJF - just that the brick room with the digging activity is at CPP, so it can't be the kill room (at the back of workinonmahnightcheese's shop at the PJF).